Mini dispayport to hdmi issue

hello everyone,
yesterday I bought a mini Displayport to hdmi adapter which I wanted to connect my 21.5 iMac to a Sony bravia hdtv. everything worked fine, beside the fact, that the sony didn't show everything (I had set up 1080p). I used it as first monitor an noticed that at each edge maybe 50 pixels where missing, which was kind of annoying!
there is no firmware update available for the sony and I'm kind of depressed because that adapter cost me 20€. Does any of you know whether there is a program or sth. else that could solve my problem.
Jakob

I have been struggling to solve this for weeks. Had actually given up and ordered a converter to VGA when I found this.
http://forums.whirlpool.net.au/forum-replies-archive.cfm/1113758.html
It works. Now I have perfect native resolution including sound from my 27" iMac.
I can not garantie that all Sony Bravia has this settings though.
Hans

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